2021 Volume 34 Issue 2 Pages 261-267
【Objective】To evaluate significance of maximum CT value for ureteral stones
【Materials and Methods】One hundred ninety-two patients were enrolled between 2012 to 2019. Stone free was defined as stones of 4 mm or smaller.
【Results】The median age was 65 years. Additional therapies were performed in 16 patients. The stone-free rate was 80.2％ (154/192). Multivariate analysis revealed a significant difference between the residual and stone free groups in the maximum diameter (median 13.0 vs 9.0 mm, p＝0.0108) and average CT value (median 1,259 vs 912 HU, p＝0.0070). The maximum CT value of the maximum cut surface was constant, but not the average CT value, according to the guideline on urolithiasis. There was no significant difference between them in this study.
【Conclusions】Ureteral stones with larger sizes and/or higher CT values require various measures for URS, and the maximum CT value may be used instead.
